Machine for treating rubber and other heavy plastic material.



F. H. BANBURY. fi'ACHlNE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIAL.

' I APPLICATION FILED FEB-1, 19w. 1,279,824.

Patented'Sept. 24,1918. ,3. my)? 2 SHEETS-SHEET I. 4% I mm T p F.H;BANBURY. .MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIAL? APPLICATION HLED (E8. 1. 9H3,

1 #279,824. j Pawnteds t. 24,19is.. j

2 SHEETS-SHUT 2- UNITED "STATES PATElST OFFICE. V

IEBNLEY n. 'Bmunr, or ANBONIA, conmzc'rlco'r; assmnon T0 mmnmnun 130x FOUNDRY, or nanny, connncncur, A conrona'rmn' MACHINE FOR TREATING RUBBER AND 0TH HEAVY PLASTIC MATERIAL.

specification 6t Lettonrnunt. Patented Sept, 24, 191,8.

Application filed Icbnuq 7, 1.18. Serial 11o. 215,76F-" To cllwharit it may com-c r71 v Be it: known that I, Fsuxnm' II. BANBUBY, a subject of the King of Great Britain, rcsiding'at Ansonia,-in the county of New Haven and State of (,onnccticut, have invented a new and useful Improvement in Machines for Treating Rubber and other Heavy Plastic Material; and I do hereby declare the following, when taken in connection with the accom anying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawingsconstitute part of this application, and represent, in

Figure 1 a front view partly in section of the upper part of a machine for mixing-rubber or other heavy plastic material constructed in accordance with my invention.

Fig. 2 a side view partly in section, of the same.

This invention relates to an improved ma-' chine for treating rubber and-other heavy plastic material, and particularly to machines comprising a" casing. a long neck opening into the top of the casing, a weight within the neck tojfcjrc the material into the onthe top of the weight; and another object path of rotary blad mounted in the casing, such, for instance, as is shown in my application filed April 2 117, Serial No. 163419. In mixing ubber certain powders are used and fed ban the neck of the machine, but: unless the bottom wall of the hopper or chute stands in a nearly vertical position these powderswill not fall by gravity. One object of this invention is to provide a chute onto which material may be furnished and adapt that chute to be turned to a vertical' position, so that the material thereon will fall into the casing. In using all these powof this invention is to-prov'idea blower to remove such accumulations. If such a blower is used provision mustjbc made for the escape of air; and another feature of'the invention is the placing of a screen in the.

lower end of the neck or top of the casing. Furthermore when such a. blower is employed, it will be placedin operation only when the weight is in an elevated position,

and another object of this invention is to indicate the position of the wei ht, this feature being also desirable to in 1cate the condition of the material being mixed. In

part of the casing mixing rubber, for instance, as'it approaches its completed state, it becomes 'such'a solid mass that the weight is raised up and down as the rotary blades turn the mass, and the movement up and downof this indicatin rod shows tothe operator the condition 0 the material being mixed; and .the invention consists in the details of construction as will be hereinafter described and particularly rccited in the claims.

In carrying out my invention, and as shown in the application above referredto, I employ a casing 3 with a long vertically arranged neck 4 in which a weight 5 travels, this weight being arrested in its downward movement by pins 6. In orderto feed material into the casing I form an opening .7 in one side ofthc neck, and tofthc neck I hinge a chute 8 which is adapted to be turned down i no an inclined position so thatmaterialmay be readily placed upon itand turned up against the casing so as to stand in a substantially vertical position so that material on the chute will dropinto the neck, and at the same time the chute will close the open ing 7. In this chute is an ofl'set portion 9 for the purpose as will hereinafter appear. 1xtcnding fransi'ersel y across the neck above the point reached by theweight in its upper most position, is.a perforated pipe '1Q'connected with any suitable air sup ly, the perforations being directed toward the to of the weight so as to blow off any dust w ich may accumulate on the weight. This blowing takes place when the weight in its up-. permost position, and the offset 9 on the chute is in line with the position of the weight in itsnppermost position, and so pipe 10, I form an opening 11 in the upper which opening is closed by a screen 12 of fine mesh, which permits the escape of .air but which will retain powder. To indicate 'the' position of the weight and so as to be sure that it is in its uppermost position before the air is turned on, I- provide an-indicator rod 13 which is mounted in the top of the weight and extends upward through the top of the casing. This indicator rod not only or lower par} of the neck,

shows when the weight is in its uppermost position so that the operator may turn on a current of air to the pipe 10, but also indi- 'is in such ar directl with the weight,

eight 20, as s the neck, and a chute -2 5 the neck, and a chute hing comprisi operation of mixing material in the casing.

As before stated, as "the operation of mixing rubber ap roaches its completion,"the mass moved u an down, and the extent of movement wi l indicate'to the operator the condition of material to be treated. It is obvious that'instead of connecting the indicator rod it might bea cable or con '14 attached to the piston 15 and extending u wardly through the top 16 of the piston'ro casing 17 over idler pulleys 18 and 19 and rovided with an indicating own by broken lines in Fig. 1. I claim 1. A machine of the class described comprising a casing and a neck opening into the top of the casing, an opl'ening in one side of inged to the-casing and adapted to close said opening.- 2 A machine of the class described comprising a casing" and a neck opening. into the top of the casing, an openin in one side of to the casing and adapted to close said opening and formed with a transverse offset.

' 3. In a machine of the class described comprising a casing and aneck, a weight verti- 80 cally movable in said neck,;and an air pi located in a the top ofthe :neck and adapt-id to discharge air across the upper face 0 weight.

4. In a machine the described a casing, a neck Opening into the to o the casi a Wei t verticall lumps that the weight will be movable in said neck, an air pipe opening ing in the upper end of the screen across said opening.

5. A machine of the class described com prising a casing, a neck extending upward therefrom, a weight movable in said neck, and an indicator moving with the weight.

6. A machine of the class described com prising a casing, a neck extending upward therefrom, a weight'movable in said neck; and an indicator rod connected with the weight and extending upward through the upper end of the neck.

7. A machine of the class'described comprising a casing, a neck extending u ward therefrom, a weight vertically mo'va le in.

said casing, an opening in said neck, a chute hinged to the neck at the lower end of the opening and normally closing said opening and adapted to be turned into an inclined position so as to expose said opening, said chute formed with a transverseofi'set, an air pipe extending across the upper part of the neck and adapted to discharge air onto the top of the weight, an I i opening in the upper end of the casing and ascreen across said openln In testimony whereof, I specificationjn' the presence ing witnesses.

ave signed this of two subscrib' H. E my. Witnessesi FREDERIC Ci EARLE, C. L. Wane. 

